3535843 - OData V2 : single $batch operation returns empty result

$batch call contains single operation, results empty result.
However when running the $batch call via directly uri/url, it works.

/n/iwfnd/traces -> performance trace call stack shows, as example for SAP_SRV_ASSET_MANAGER_2405:

1    1    1    /IWBEP/SAPLFGR_MGW_CLIENT_IF    /IWBEP/FM_MGW_HANDLE_REQUEST    81    3
2            >Request Payload Size    3739 Bytes        
3            >Response Payload Size    787 Bytes        
4    1    2    /IWBEP/CL_MGW_REMOTE_HANDLER    PROCESS_BATCH    78    
5    1    3    /IWBEP/CL_MGW_REMOTE_HANDLER    PROCESS_READ_PACKAGE    78    1
6    4    4    /IWBEP/CL_MGW_REMOTE_HANDLER    GET_ENTITY_SET    77    5
7        5    /IWBEP/CL_MGW_DPC_FACTORY    /MFND/CL_CORE_ODATA_V2_DPC        
8    1    5    /IWBEP/CL_MGW_MED_PROVIDER    GET_SERVICE_METADATA    72    66
9        6    /IWBEP/CL_MGW_MED_PROVIDER    GET_LAST_MODIFIED    6    6
10        5    /MFND/CL_CORE_ODATA_V2_DPC    BATCH_BEGIN        ======> but no BATCH_END called
11    1    5    /MFND/CL_CORE_ODATA_V2_DPC    GET_ENTITYSET        
12        6    /IWBEP/CL_MGW_MED_PROVIDER    GET_SERVICE_METADATA 

SAP Gateway (OData)

EntitySet, empty result, batch calls, SAP Service & Asset Manager 2405, SAP BTP Mobile Services, SAP Cloud Connector, BATCH_END method, SAP note 0003223611, /MFND/CL_CORE_ODATA_V2_DPC , SAP_SRV_ASSET_MANAGER_2405  , KBA , OPU-GW-COR , Framework , Problem